Random pixel popping

[Mouse-Potato]

Hello all,

 

I just picked up a 25" HP OMEN 144hz monitor.

 

When i'm in a black background I can see random green pixels popping all over the screen.

 

I am using a DP port cable from my RX 580.

 

Has anyone a clue to what this is? Should I return the screen or is this a known settings issue?

 

Anything would help !

 

 

[kelvinhall05]

Can you take a video of it? Does it only happen when it's dark?

[Mouse-Potato]

30 minutes ago, kelvinhall05 said:

Can you take a video of it? Does it only happen when it's dark?

I doubt it'll show up on video, it happens so fast and the pixels are pretty small.

 

It's kind of like TV static and I think it happens all the time but is easier to see when the image is dark in contrast to the bright green pixels.

 

[kelvinhall05]

17 minutes ago, Mouse-Potato said:

I doubt it'll show up on video, it happens so fast and the pixels are pretty small.

 

It's kind of like TV static and I think it happens all the time but is easier to see when the image is dark in contrast to the bright green pixels.

 

Start with a different cable. If that doesn't fix it, try another input on the monitor or output on the GPU. I bet that it's either your cable or GPU, but I'm not certain.

 

 

Do you have another device of any kind that you can use on the monitor? Preferably that can be used to test your current cable and monitor input/port.

[Mouse-Potato]

1 hour ago, kelvinhall05 said:

Start with a different cable. If that doesn't fix it, try another input on the monitor or output on the GPU. I bet that it's either your cable or GPU, but I'm not certain.

 

 

Do you have another device of any kind that you can use on the monitor? Preferably that can be used to test your current cable and monitor input/port.

 

22 minutes ago, Hakemon said:

Rather odd, last time I saw anything like that was with DVI.  Display Port usually has a different kind of artifact, but yea try a different cable just in case.

Changed the cable and it fixed it !

 

Weird though as it's hardly ever been used.

 

I've had issues like this in the past with hdmi cables.

 

Thanks for the suggestions !

[Mouse-Potato]

9 hours ago, Hakemon said:

Yea so basically if a cable has bad shielding it can get things like crosstalk, etc and that's what happens.  Contrary to the popular belief of "it's digital it just works" or "it's either a 1 or a 0", there can be situations where the transceiver in the monitor simply cannot tell if it is supposed to be a 1 or a 0, and then that's where the digital noise comes from.

Fun fact, fudge enough with an old school CGA or EGA monitors RGB/Intensity line enoughh, and you can get similar results on those as well as those are also digital monitors.

That's a nice way to explain noise ! I didn't know that's how it worked